Which duct is the terminal excretory duct formed by the merger of the striated ducts in intraepithelial glands
Question
Which duct is the terminal excretory duct formed by the merger of the striated ducts in intraepithelial glands?
Solution
The terminal excretory duct formed by the merger of the striated ducts in intraepithelial glands is known as the intercalated duct. Here are the steps:
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Intraepithelial glands, also known as exocrine glands, are glands that secrete substances onto an epithelial surface by way of a duct.
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These glands have a system of ducts that transport the secretions from the gland to the target surface. The system usually starts with smaller ducts merging into larger ones.
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The smallest ducts, which are in direct contact with the glandular cells, are known as the intercalated ducts.
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The intercalated ducts then merge to form the striated ducts. The striated ducts are named for their appearance under a microscope, which is due to the presence of mitochondria and infoldings of the plasma membrane.
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The striated ducts then merge to form the interlobular ducts, which eventually drain the gland's secretions to the surface of the epithelium.
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Therefore, the terminal excretory duct formed by the merger of the striated ducts in intraepithelial glands is the intercalated duct.
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